
Elimination Method in Systems of Equations

Interactive Video
•
Mathematics
•
8th - 10th Grade
•
Hard
Standards-aligned

Emma Peterson
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary goal of the elimination method in solving systems of equations?
To find the determinant of the system
To eliminate one variable by making its coefficient zero
To convert the system into a matrix form
To graph the equations and find the intersection
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When using the elimination method, what is a common mistake students make?
Forgetting to multiply both sides of the equation
Not checking the solution by substitution
Eliminating the wrong variable
Using the wrong sign when adding or subtracting equations
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should you do if the coefficients of the variables are not suitable for elimination?
Add a constant to both equations
Switch to a different method like substitution
Adjust the coefficients by multiplying the equations
Ignore the coefficients and solve directly
Tags
CCSS.HSA.REI.C.6
CCSS.8.EE.C.8B
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the elimination method, why is it beneficial to have one positive and one negative coefficient?
It simplifies the addition process
It ensures the solution is unique
It helps in graphing the equations
It reduces the number of steps needed
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you simplify a system of equations that includes fractions?
Ignore the fractions and solve the system
Add the fractions directly
Multiply by a common denominator to eliminate fractions
Convert the fractions to decimals
Tags
CCSS.8.EE.C.8B
CCSS.HSA.REI.C.6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step when dealing with a system of equations that includes fractions?
Convert all fractions to decimals
Find a common denominator and multiply through
Add the fractions together
Ignore the fractions and solve the system
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the least common multiple of 3 and 5?
20
10
25
15
Tags
CCSS.HSA.REI.C.9
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